No two ISPs are alike. PowerMTA lets you tailor delivery rules to individual recipient domains for optimal inbox placement.
This is where you link your server's local IP address to your sending domain. This is crucial for passing SPF and DKIM checks.
A robust PowerMTA configuration is divided into several mandatory sections. 1. Global Settings and Resource Allocation powermta config file link
By default, the PowerMTA configuration file is located at: /etc/pmta/config
Enable TLS 1.2 or 1.3 to ensure secure transmission of emails. No two ISPs are alike
# listener <smtp-listener> port 2525 interface 0.0.0.0 allow-auth plain login </smtp-listener>
Controls how PowerMTA sends emails to external ISPs (Gmail, Yahoo, etc.). 2. Core Components of a PowerMTA Configuration This is crucial for passing SPF and DKIM checks
: Your host-name (e.g., mail.yourdomain.com ) should match your server’s rDNS record for legitimacy.
Easily overwrite IP or domain lists via scripts without touching global settings.